From: http://www.vexforum.com/archive/index.php/t-76034.html

The part numbers are the same as found on the Kit pages.

For the single acting cylinders (http://www.vexrobotics.com/vex/products/accessories/motion/275-0274.html):
Tire Pump Fitting – Shraeder Valve With 4mm Tube Fittings – 8090410075
Reservoir – Reservoir, 1-1/2″ X 4″, w 1/8″NPT & M5 port – US14227-S0400
Pressure Regulator – Mini Regulator w/ 4mm Fittings – A-474-0000005
“T” Fitting – “T” Fitting for Valves – KQ2T04-00
Cylinder, Air Push, Spring Return – Single Acting Spring Return Cylinder 10mm Bore – NCJ2D10-200S
Solenoid, On/Off – 3/2 Solenoid Valve, 5VDC – SY113-SMO-PM3-F
Fitting for Valves – Fitting 4mm Tubing x M3 Thread – KJS04-M3 or KJL04-M3
Fitting for Reservoir – 1/8 X 4mm Male Connector To Reservoir – KQ2H03-34S
Fitting for Cylinders – M5 Male Connector for Cylinders – KQ2S04-M5
Tubing – 4mm X 1696mm Length Tubing – TUO425B-X81US1696

For the dual acting cylinders (http://www.vexrobotics.com/vex/products/accessories/motion/275-0276.html):
Tire Pump Fitting – Shraeder Valve With 4mm Tube Fittings – 8090410075
Reservoir – Reservoir, 1-1/2″ X 4″, w 1/8″NPT & M5 port – US14227-S0400
On/Off Switch – Finger Valve – VHK3-04F-04F
Pressure Regulator – Mini Regulator w/ 4mm Fittings – A-474-0000005
“T” Fitting – “T” Fitting for Valves – KQ2T04-00
Cylinder, Bi-directional – Dbl Acting Cylinder 10mm Bore – NCJ2D10-200
Solenoid, Fwd, Reverse – 5/2 Single Solenoid Valve, 5VDC – SYJ3120-SMO-M3-F
Flow Meter – M5 elbow meter out flow control 4mm tubing – AS1201F-M5-04T
Fitting for Valves – Fitting 4mm Tubing x M3 Thread – KJS04-M3
Fitting for Reservoir – 1/8 X 4mm Male Connector To Reservoir – KQ2H03-34S
Fitting for Cylinders – M5 Male Connector for Cylinders – KQ2S04-M5
Tubing – 4mm X 1696mm Length Tubing – TUO425B-X81US1696

Note that you cannot purchase the solenoid cable or the custom metal from an external vendor that comes with the kit from VEX. You can purchase the solenoid cables from VEX (http://www.vexrobotics.com/vex/products/accessories/logic/275-1417.html) separately and you can rig your own mount by purchasing plus gussets.